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Finding the Fourth Proportional to 105,672.80, 145,834.41 and 62,677.80

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Solution

The fourth proportional to 105,672.80, 145,834.41 and 62,677.80 is: 86,498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,672.80 : 145,834.41 = 62,677.80 : x
  2. Step 2: Convert to fraction form
    105,672.80/145,834.41 = 62,677.80/x
  3. Step 3: Cross multiply
    105,672.80x = 145,834.41 × 62,677.80
  4. Step 4: Simplify right side
    105,672.80x = 9,140,578,940.54
  5. Step 5: Solve for x
    x = 9,140,578,940.54/105,672.80
  6. Step 6: Final answer
    x = 86,498.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.